Curious Directive, a bright young company from Norwich, have crafted an hour-long immersive show about the NHS. Co-written by Russell Woodhead and Jack Lowe (who also directs), it’s keenly political — but thought-provoking rather than tub-thumping.

In groups of five, we’re bundled into an ambulance and ferried around Southwark, with headphones relaying the textures of what’s apparently a typical shift for the ambulance crew. Details of emergencies pop up on a screen, and from time to time the doors spring open so we can clamber from the hot, cramped vehicle to interact with civilians in need.

For driver Sylvia, whom we never see, it’s the last day on the job. Voiced with spiky precision by Sarah Woodward, she deals confidently with tricky patients. Yet she worries about the NHS’s decline and what strikes her as the inadequacy of the next generation of staff.

One newcomer is Emily Lloyd-Saini’s Lisa. Fresh from training and idealistic, she’s an engaging presence. Though the experience is sometimes clunkily managed, it portrays the commitment of frontline NHS workers with warmth and lyricism.